Thanks, very instructive! One question though @1:02:50 "despite it's name it [a tuner] does not actually tune the antenna": doesn't the whole antenna system (coax + antenna) get tuned however? If yes, and you have choke at the input end of the antenna, isn't that the equivalent of tuning the antenna?
No the antenna tuner is a misnomer. It is a matching network. If used at the radio it only provides a combination or capacitance and induction to get the antenna system close yo 50ohms. It does nothing to the inherent impedance of the antenna system. So the standing wave (SWR) is still there between the tuner and the antenna. A tuner used at the antenna moves the mismatch further away from the radio and minimizes the coax losses.
Thanks, very instructive! One question though @1:02:50 "despite it's name it [a tuner] does not actually tune the antenna": doesn't the whole antenna system (coax + antenna) get tuned however? If yes, and you have choke at the input end of the antenna, isn't that the equivalent of tuning the antenna?
No the antenna tuner is a misnomer. It is a matching network. If used at the radio it only provides a combination or capacitance and induction to get the antenna system close yo 50ohms. It does nothing to the inherent impedance of the antenna system. So the standing wave (SWR) is still there between the tuner and the antenna. A tuner used at the antenna moves the mismatch further away from the radio and minimizes the coax losses.
KO4SHZ Emil Lebron